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E.g., 07/22/2019
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Your search has returned 514 articles:
  • News in Brief

    Southern right whale moms and calves may whisper to evade orcas

    Whales are known for belting out sounds in the deep. But they may also whisper. 

    Southern right whale moms steer their calves to shallow waters, where newborns are less likely to be picked off by an orca. There, crashing waves mask the occasional quiet calls that the pairs make. That may help the whales stick together without broadcasting their location to predators, researchers report...

    07/11/2019 - 11:00 Animals, Evolution, Oceans
  • News

    A mysterious coral disease is ravaging Caribbean reefs

    Divers monitoring coral reefs off St. Thomas in the U.S. Virgin Islands in January noticed something alarming: Big white lesions were eating into the colorful tissues of hundreds of stony corals. Some corals were dead by the next day — only their stark white skeletons remained. Others languished for up to two weeks. Within four months, more than half of the reef suffered the same demise.

    ...
    07/09/2019 - 06:00 Oceans, Ecosystems, Climate
  • News

    The largest seaweed bloom ever detected spanned the Atlantic in 2018

    During the summer, vast, floating islands of Sargassum algae can blanket entire parts of the tropical Atlantic Ocean. The algae reached their largest extent on record in June 2018, forming a giant brown belt that extended for 8,850 kilometers from the west coast of Africa into the Gulf of Mexico. At least 20 million metric tons of Sargassum made up the belt, the largest bloom of seaweed ever...

    07/04/2019 - 14:00 Oceans
  • News

    The world’s fisheries are incredibly intertwined, thanks to baby fish

    Marine fisheries are typically managed by individual nations. But the fish in those stocks often originate elsewhere, according to a computer simulation of how eggs and larvae from hundreds of fish species ride ocean currents around the world.

    That finding means that many nations with economies that rely on fishing must depend on other countries to maintain important spawning grounds....

    06/20/2019 - 14:00 Oceans, Ecology, Sustainability
  • News in Brief

    Tiny plastic debris is accumulating far beneath the ocean surface

    Vast swathes of litter floating on the ocean, like the great Pacific garbage patch, may just be the tip of the trash heap.

    Divers have reportedly spotted plastic bags and candy wrappers as deep as the Mariana Trench. Now, a survey of microplastics at various depths off the coast of California suggests that this debris is most common several hundred meters below the surface, scientists...

    06/06/2019 - 09:00 Oceans, Pollution, Animals
  • Feature

    The Southern Ocean may be less of a carbon sink than we thought

    The vast stretch of icy water that separates Antarctica from other continents is a dark mystery to most people. Polar explorer Ernest Shackleton, one of the few who have been to the Southern Ocean, regarded its storm-wracked seas with fear and awe. After ice floes trapped and crushed the three-masted Endurance in 1915, Shackleton made an epic rescue attempt, sailing 1,300 kilometers to bring...

    06/02/2019 - 06:00 Climate, Earth, Oceans
  • News

    Endangered green sea turtles may be making a comeback in the U.S. Pacific

    Beleaguered populations of green sea turtles living in and around Hawaii and American Pacific island territories are increasing in number. 

    From 2002 to 2015, scuba diving researchers circumnavigated 53 islands, atolls and coral reefs throughout the U.S. Pacific, conducting the first comprehensive survey in that region of the turtles’ ocean habitats. Over the 13 years, the divers counted...

    04/26/2019 - 07:00 Animals, Ecosystems, Oceans
  • News

    A global survey finds that the Arctic Ocean is a hot spot for viruses

    Arctic waters turn out to be teeming with some of the world’s smallest entities — viruses.

    Water samples taken during a three-year expedition around the world’s oceans identified around 200,000 virus species, roughly 12 times the number found in a previous smaller survey. And 42 percent of those viruses were found exclusively in the Arctic, researchers report April 25 in Cell.

    The...

    04/25/2019 - 11:00 Microbes, Oceans, Ecology
  • Science Visualized

    Warm, dry winds may be straining Antarctica’s Larsen C ice shelf

    Turquoise pools of snowmelt on the Antarctic Peninsula, including on the Larsen C ice shelf, have recently been forming months after the continent’s peak summer melt. Bursts of warm, dry wind cascading over mountains that run along the peninsula are largely to blame, researchers report April 11 in Geophysical Research Letters. In this March 2016 satellite image, meltwater on part of Larsen C...

    04/18/2019 - 06:00 Earth, Climate, Oceans
  • News

    Antarctica’s iceberg graveyard could reveal the ice sheet’s future

    Just beyond the tip of the Antarctic Peninsula lies an iceberg graveyard. 

    There, in the Scotia Sea, many of the icebergs escaping from Antarctica begin to melt, depositing sediment from the continent that had been trapped in the ice onto the seafloor. Now, a team of researchers has embarked on a two-month expedition to excavate the deposited debris, hoping to discover secrets from the...

    04/09/2019 - 09:00 Climate, Oceans, Earth